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Schwartz topological vector space

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Schwartz topological vector space

In functional analysis and related areas of mathematics, Schwartz spaces are topological vector spaces (TVS) whose neighborhoods of the origin have a property similar to the definition of totally bounded subsets. These spaces were introduced by Alexander Grothendieck.

A Hausdorff locally convex space X with continuous dual , X is called a Schwartz space if it satisfies any of the following equivalent conditions:

Every quasi-complete Schwartz space is a semi-Montel space. Every Fréchet Schwartz space is a Montel space.

The strong dual space of a complete Schwartz space is an ultrabornological space.

Every infinite-dimensional normed space is not a Schwartz space.

There exist Fréchet spaces that are not Schwartz spaces and there exist Schwartz spaces that are not Montel spaces.

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